DIGITAL ARCHIVE of SLAVERY to FREEDOM at MONTICELLO   (beta)

to bring the wheels of my Phaetons & chairs to an uniform measure, let the arms of the axles be always 10½I. between the shoulder & linch pin, 1¾I. diam. at the shoulder, & 1¼I. diam. at the inside of the linch pin, or washer.

Jan. 9. running the rafter level through a field to guide the ploughs horizontally, Thruston makes a step of the level (10f.) every minute, which is 600.f. = 200. yds an hour.

Jan. 9. in terrassing the new nursery in 4.f. terrases, 2 men do 50. yds in length a day.

Apr. 29. we find that in blowing rock it takes 2. oz. of powder to a blast, taking one depth of hole with another.*

1813, 1814. in blowing on the river road at the foot of Monticello, I found pretty accurately that each borer used ¼℔ powder a day, & bored 3 holes of 12.I. each a day. this gives 1⅓oz. to the blast

Colclaser says that a man saws & rives the timber & dresses compleatly for setting up 350 staves a staves for 250 barrels a day, 17. staves to a barrel.